I have a Macbook and purchased a Mini DV to HDMI converter. I plug the converter to my mini dv port, and other cable end into HDMI on my Vizio TV (I've tried all 3 ports HDMI in 1, 2, & 3). The Macbook goes to a quick grey-blue screen when the cable is hooked up, but then back to normal background after a second or two. TV never gets a signal. Same grey-blue thing happens when I change HDMI inputs on the TV. Tried every display setting possible on the Macbook. I've also tried shutting both down and restarting the TV first, then the Macbook. No luck. Had a friend take the cable home and it worked for him- so I don't think it's bad. Any other ideas to get this working?